"Like it or not, coal is here to stay for a long time to come," Maria van der Hoeven, the agency's executive director, said in a statement. "Coal is abundant and geopolitically secure, and coal-fired plants are easily integrated into existing power systems."

"With advantages like these, it is easy to see why coal demand continues to grow," she added.

The burning of coal, the dirtiest form of fossil fuel, has a big impact on the environment and is one of the biggest source of greenhouse gas emissions.

China, which last year imported the most coal of any country ever in a single year, continues to wield huge influence in global energy markets. China has already green lighted several coal conversion projects to produce fuels and synthetic natural gas, a potentially major shift in its reliance on other fossil fuels.

"During the next five years, coal gasification will contribute more to China's gas supply than shale gas," said Keisuke Sadamori, the agency's director of energy markets and security. "The potential scale of projects in China involving coal to produce synthetic natural gas and synthetic liquids is enormous."

Workers in some professions don't just deal with boredom or stress. Every year, thousands of workers die from mishaps while on the job. A recent report from the Bureau of Labor Statistics showed a preliminary count of 4,383 work-related fatalities in 2012, a slight drop from the 4,693 deaths in...